A discharge device for a bottle preform injection molding machine

By introducing multiple partitions and drive components into the preform injection molding machine's discharge device, the spacing between the partitions is automatically adjusted, solving the problems of preform jamming and falling, and improving production efficiency and applicability.

CN224374688UActive Publication Date: 2026-06-19SHENYANG ZIJIANG PACKAGING CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENYANG ZIJIANG PACKAGING CO LTD
Filing Date
2025-06-10
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

The existing preform injection molding machine's discharge device is difficult to adjust according to the size and weight of preforms of different specifications, resulting in preform jamming and uneven dropping, reducing production efficiency and increasing manual adjustment costs.

Method used

The design employs multiple partitions and drive components to adjust the spacing. Bottle preforms are transported via a conveyor belt, and the partitions are moved by a motor and electric push rod to automatically adjust the gap, avoiding manual adjustment.

Benefits of technology

It enables quick adjustment of partition spacing without manual intervention, improving production efficiency and applicability while reducing labor costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of discharging devices for bottle blank injection molding machine, it is related to bottle blank injection molding machine technical field, including: shell, the side of the shell is equipped with discharge port;Feed hopper, the feed hopper is perforated and set in the top of shell;Conveyer belt, the conveyer belt rotation is set in shell interior;Multiple partitions, multiple the partition is set in shell interior and located above conveyer belt, the drive assembly for adjusting the gap of multiple partitions is set on the shell;The utility model passes through the bottle blank in feed hopper and falls on the conveyer belt between multiple partitions, conveyer belt rotates and exports bottle blank, drive assembly drives multiple partitions to move, to adjust the distance between multiple partitions, without manual adjustment, convenient and fast, and stronger applicability.
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Description

Technical Field

[0001] This utility model relates to the field of bottle preform injection molding machine technology, specifically to a discharge device for a bottle preform injection molding machine. Background Technology

[0002] Preform injection molding machines are core equipment in the plastic packaging industry. They heat and melt plastic raw materials and inject them into the mold cavity, where they are cooled and shaped to form preforms, providing the foundation for subsequent blow molding.

[0003] The discharge device of a preform injection molding machine is used to transport the molded preform to the next station. Currently, the discharge gap of common preform injection molding machines is usually fixed or can only be adjusted manually. It is difficult to adjust according to the size and weight of preforms of different specifications. In actual production, when changing the type of preform to be produced, the inconvenient discharge gap can easily cause problems such as preform jamming and poor drop, which reduces production efficiency and increases manual adjustment costs. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a discharge device for a preform injection molding machine. The preform falls from the feed hopper onto a conveyor belt between multiple partitions. As the conveyor belt rotates, it transports the preform outward. The drive component moves the multiple partitions to adjust the spacing between them. This eliminates the need for manual adjustment, making it convenient, quick, and highly applicable.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a discharge device for a preform injection molding machine, comprising:

[0006] The housing has a discharge port on one side;

[0007] A feed hopper, which is disposed through the top of the housing;

[0008] A conveyor belt, which is rotatably disposed inside the housing;

[0009] Multiple partitions are disposed inside the housing and above the conveyor belt, and the housing is provided with a drive assembly for adjusting the gap between the multiple partitions;

[0010] A pair of rotating plates are rotatably arranged on both sides of the bottom of the feed hopper. Each rotating plate has a through groove. A pair of guide plates are rotatably arranged on the top of the partition plates on both sides. The pair of guide plates are slidably arranged in the pair of through grooves.

[0011] Preferably, a motor is provided on the outer wall of the housing, and multiple rotating rollers are rotatably arranged inside the housing. The output shaft of the motor is connected to the roller shaft of one of the rotating rollers, and the conveyor belt is sleeved on the multiple rotating rollers.

[0012] Preferably, the driving component includes:

[0013] A cover, which extends through the top of the housing;

[0014] An electric push rod is installed on the inner wall of the top of the cover. The telescopic end of the electric push rod is connected to a movable plate, and the movable plate has multiple inclined sliding grooves.

[0015] A pair of slide rails, the pair of slide rails being disposed on the inner wall of the housing;

[0016] Multiple transmission rods are provided, each of which is equipped with a pair of sliders and a sliding rod. Each pair of sliders is horizontally slidably mounted on a pair of slide rails, and multiple sliding rods are slidably mounted in multiple grooves on a movable plate. The bottom of the multiple transmission rods is connected to multiple partitions.

[0017] Preferably, two pairs of first bearing seats are provided on both sides of the bottom of the feed hopper, and a first rotating shaft is rotatably provided on each pair of first bearing seats. Each rotating plate is connected to the first rotating shaft. Two pairs of second bearing seats are provided on the top of the partition plates on both sides, and a second rotating shaft is rotatably provided on each pair of second bearing seats. Each guide plate is connected to the second rotating shaft.

[0018] This utility model provides a discharge device for a preform injection molding machine, which has the following advantages:

[0019] 1. This utility model involves feeding preforms from the hopper onto a conveyor belt between multiple partitions. As the conveyor belt rotates, it transports the preforms outwards. The drive assembly moves the multiple partitions to adjust the spacing between them. This eliminates the need for manual adjustment, making it convenient, quick, and highly applicable.

[0020] 2. A pair of guide plates rotatably arranged on the top of the two side partitions of this utility model are used to guide the bottle preform falling from the feed hopper into the space between the partitions. A pair of baffles are set at the bottom of the two pairs of first shaft seats at the bottom of the feed hopper to prevent the bottle preform from falling to the outside of the partition. Attached Figure Description

[0021] Figure 1 This is a front view of the internal structure of this utility model;

[0022] Figure 2 for Figure 1 A cross-sectional view along the AA direction;

[0023] Figure 3 for Figure 2 Enlarged schematic diagram of part B in the middle;

[0024] Figure 4 This is a schematic diagram of the internal structure of the drive component of this utility model.

[0025] In the diagram: 1. Shell; 1-1. Discharge port; 2. Feed hopper; 3. Rotary roller; 4. Conveyor belt; 5. Motor; 6. Cover; 7. Slide rail; 8. Slider; 9. Transmission rod; 10. Slide rod; 11. Moving plate; 11-1. Slide groove; 12. Electric push rod; 13. Partition plate; 14. First shaft seat; 15. Second shaft seat; 16. First rotating shaft; 17. Second rotating shaft; 18. Rotating plate; 18-1. Through groove; 19. Guide plate; 20. Baffle. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-4 This utility model provides a technical solution: a discharge device for a preform injection molding machine, comprising:

[0028] The housing 1 has a discharge port 1-1 on one side;

[0029] Feed hopper 2 is disposed through the top of housing 1;

[0030] Conveyor belt 4 is rotatably disposed inside housing 1;

[0031] Multiple partitions 13 are disposed inside the housing 1 and above the conveyor belt 4. The housing 1 is provided with a drive assembly for adjusting the gap between the multiple partitions 13.

[0032] A pair of rotating plates 18 are rotatably arranged on both sides of the bottom of the feed hopper 2. Each rotating plate 18 has a through groove 18-1. A pair of guide plates 19 are rotatably arranged on the top of the partition plates 13 on both sides. The pair of guide plates 19 are slidably arranged in the pair of through grooves 18-1.

[0033] In this embodiment, the bottom of the housing 1 is provided with multiple support legs, so that the height of the feed hopper 2 on the housing 1 corresponds to the outlet height of the preform injection molding machine; when the conveyor belt 4 rotates, it can transport the preform towards the discharge port of the housing 1; the drive assembly can drive multiple partitions 13 to move simultaneously, so as to adjust the gap between the multiple partitions 13 synchronously; a pair of guide plates 19 rotatably arranged on the top of the two side partitions 13 are used to guide the preform falling from the feed hopper 2 into the space between the partitions 13.

[0034] As an embodiment of this utility model, a motor 5 is provided on the outer wall of the housing 1, and multiple rotating rollers 3 are rotatably arranged inside the housing 1. The output shaft of the motor 5 is connected to the roller shaft of one of the rotating rollers 3, and the conveyor belt 4 is sleeved on the multiple rotating rollers 3.

[0035] In this embodiment, when the output shaft of the motor 5 rotates, it can drive the connected roller 3 to rotate, the roller 3 drives the conveyor belt 4 to rotate, and the conveyor belt 4 drives other rollers 3 to rotate.

[0036] As one embodiment of this utility model, the driving component includes:

[0037] Cover 6, cover 6 is disposed through the top of housing 1;

[0038] Electric push rod 12 is installed on the inner wall of the top of the cover 6. The telescopic end of the electric push rod 12 is connected to a movable plate 11. Multiple inclined sliding grooves 11-1 are provided on the movable plate 11.

[0039] A pair of slide rails 7 are provided on the inner wall of the cover 6;

[0040] Multiple transmission rods 9, each transmission rod 9 is equipped with a pair of sliders 8 and a slide bar 10. Each pair of sliders 8 is horizontally slidably mounted on a pair of slide rails 7. Multiple slide bars 10 are slidably mounted in multiple slide grooves 11-1 on a moving plate 11. The bottom of the multiple transmission rods 9 is connected to multiple partition plates 13.

[0041] In this embodiment, the slide grooves 11-1 are all inclined, so that when the electric push rod 12 drives the moving plate 11 to move, the slide rod 10 can slide in the slide groove 11-1, thereby causing the slide rod 10 to drive the transmission rod 9 to move.

[0042] As an embodiment of this utility model, two pairs of first bearing seats 14 are provided on both sides of the bottom of the feed hopper 2. A first rotating shaft 16 is rotatably provided on each pair of first bearing seats 14. Each rotating plate 18 is connected to the first rotating shaft 16. Two pairs of second bearing seats 15 are provided on the top of the partition plates 13 on both sides. A second rotating shaft 17 is rotatably provided on each pair of second bearing seats 15. Each guide plate 19 is connected to the second rotating shaft 17.

[0043] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires, and should select appropriate controllers according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical connections between the various electrical components are completed in sequence. The detailed connection methods are well-known technologies in the field. The following mainly introduces the working principle and process, and will not describe the electrical control further.

[0044] The working principle and usage process of this utility model are as follows: During use, move the feed hopper 2 to a position close to the outlet of the preform injection molding machine, start the motor 5, and the motor 5 will drive the conveyor belt 4 to rotate clockwise (e.g., ...). Figure 1 In the middle section, the preform injection molding machine conveys the produced preforms to the feed hopper 2, from which they fall into the gaps between multiple partitions 13. The conveyor belt 4 then transports the preforms towards the outlet of the housing 1. A pair of guide plates 19 on the top of the two side partitions 13 guide the preforms between the partitions 13. To prevent the preforms from falling outside the partitions 13, a pair of baffles 20 are installed at the bottom of the two pairs of first bearing seats 14 at the bottom of the feed hopper 2. When it is necessary to adjust the gaps between the multiple partitions 13, the electric push rod 12 installed on the housing 6 is activated. The telescopic end of the electric push rod 12 drives the connected moving plate 11 to move vertically. The moving plate 11 causes multiple sliding rods 10 to slide in multiple sliding grooves 11-1. When the sliding rods 10 move, they drive the transmission rod 9 to move horizontally. The transmission rod 9 drives a pair of sliders 8 connected to slide in a pair of slide rails 7. At the same time, the transmission rod 9 drives the bottom-connected partition 13 to move, thereby adjusting the position of the multiple partitions 13. When the partitions 13 on both sides move, the transmission rod 9 will rotate around the second rotating shaft 17, thereby causing the guide plate 19 to slide in the through groove 18-1 on the rotating plate 18, and the rotating plate 18 to rotate around the first rotating shaft 16. The guide plate 19 and the rotating plate 18 can effectively seal the bottom sides of the feed hopper 2. In this utility model, the bottle preform in the feed hopper 2 falls onto the conveyor belt 4 between the multiple partitions 13. When the conveyor belt 4 rotates, it transports the bottle preform outward. The drive component drives the multiple partitions 13 to move, thereby adjusting the spacing between the multiple partitions 13. No manual adjustment is required, which is convenient, fast and highly applicable.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bottle preform injection molding machine with a discharge device, characterized by, include: The housing (1) has a discharge port (1-1) on one side; Feed hopper (2), which is disposed through the top of the housing (1); Conveyor belt (4), which is rotatably disposed inside housing (1); Multiple partitions (13) are disposed inside the housing (1) and above the conveyor belt (4), and the housing (1) is provided with a drive assembly for adjusting the gap between the multiple partitions (13); The bottom sides of the feed hopper (2) are provided with a pair of rotating plates (18), each of the rotating plates (18) is provided with a through groove (18-1), and the top of the partitions (13) on both sides is provided with a pair of guide plates (19), which are slidably disposed in the pair of through grooves (18-1).

2. The bottle preform injection molding machine outfeed apparatus of claim 1 wherein, A motor (5) is provided on the outer wall of the housing (1), and multiple rotating rollers (3) are rotatably arranged inside the housing (1). The output shaft of the motor (5) is connected to the roller shaft of one of the rotating rollers (3), and the conveyor belt (4) is sleeved on the multiple rotating rollers (3).

3. The bottle preform injection molding machine outfeed apparatus of claim 1 wherein, The driving component includes: A cover (6) is provided through the top of the housing (1); An electric push rod (12) is installed on the inner wall of the top of the cover (6). The telescopic end of the electric push rod (12) is connected to a moving plate (11). The moving plate (11) has multiple inclined sliding grooves (11-1). A pair of slide rails (7) are provided on the inner wall of the housing (6); Multiple transmission rods (9) are provided, each of which is provided with a pair of sliders (8) and a slide bar (10). Each pair of sliders (8) is horizontally slidably disposed on a pair of slide rails (7). Multiple slide bars (10) are slidably disposed in multiple slide grooves (11-1) on a movable plate (11). The bottom of the multiple transmission rods (9) is connected to multiple partition plates (13).

4. The discharge device for a preform injection molding machine according to claim 1, characterized in that, The bottom sides of the feed hopper (2) are provided with two pairs of first bearing seats (14), each pair of first bearing seats (14) is rotatably provided with a first rotating shaft (16), each rotating plate (18) is connected to the first rotating shaft (16), the top of the partition plates (13) on both sides are provided with two pairs of second bearing seats (15), each pair of second bearing seats (15) is rotatably provided with a second rotating shaft (17), each guide plate (19) is connected to the second rotating shaft (17).